Bug#619364: linux-image-2.6.38-1-amd64: forcedeth module blocks new tcp connections after some time

[Jonathan Nieder <jrnieder@gmail.com>]

# presumably affects wheezy, too
tags 619364 - squeeze sid
quit

Hi,

Vitalie Lazu wrote:

> After some time (16 hours or so) my computer blocks new tcp
> connections to internet.  Local network works perfect, I can connect
> to my wireless router to tcp port 80.  Ping also works to external
> networks, existing connections also works and data is transfered
> without any problems or delay.
>
> The main problem is that it can not create any new connections
[...]
> I have to reboot debian to make network connections work again. It
> also fails to reboot my computer, it hangs after wrintting to
> console that system will be rebooted.

Interesting.

> I tried to remove module forcedeth from kernel and add it again,
> stopped eth0 interface, disconnected network cable, nothing helped.
> The bug is also present in Squeeze kernel.

What version did you test in squeeze?  Is there an older kernel that
worked?

> How can I help to debug this problem further and fix it?
[...]
>  * Proprietary module has been loaded.
>  * Out-of-tree module has been loaded.

Please test with a recent kernel from sid or experimental, without the
fglrx driver.  I would be interested in:

 - "dmesg" output when this occurs;
 - what gets written to the kernel log if you run
   "echo w >/proc/sysrq-trigger" afterwards

to see which kernel thread is stuck, but probably more important is to
report this upstream at <http://bugzilla.kernel.org/>, product
Drivers, component Network, and let us know the bug number so we can
work on it there.

Thanks, and sorry for the slow response,
Jonathan